Feed gauge for printing presses



March 22, 1932. A. R. G. HORNE 1,850,625

FEED GAUGE FOR PRINTING PRESSES Filed May 26, 1930 1 j 5 4 V Y I jnvenfor H.R.G.HOIH&

I 3 by 7 2 3) Panama.- 22,1932 g 1 1,850,625

* UNITED STATES. ATEN orrics Application filed May 26, 1930. Serial No. 455,779.

Thisinv'ention relates to sheet gauges or 1 indicates the tympan'sheet to which the guides for platen printing presses and which gauge is to be applied. The gauge comprises are attached to the-tympanor sheet drawn a base member A and a guide member B. over the platen. Various gaugesfor this pur- T he base member is formed as a fiat plate2 pose have been devised, one type being that having adjacent one end a pair of spaced in which the gaugeiscemented or glued to teeth3 bent up at one end and adjacent its the surface of the tympan sheet. The use other end a pair of holes 4., Teeth 5 may be of the cementor glue is mussy, audit is difformed onv the underside of the plate 2 to ficult to make the'devi'ce stick in place, and prevent slipping of'the plate. The upper 1" it often results in a tearing of the sheet, makends of the teeth 3 are sufliciently sharp to ing its replacement necessary. Another compierce the material of the tympan sheet. mon type is that provided with a prong which The guide member B is also formed from isinserted through a hole in the tympan a sheet of flat metal 6 having longitudinal sheet. This form is 'diflicult to maintain in' slits 7 formed therein. The ends of the r place on account" of the liability of the tymouter parts are shaped to form tongues 8 pan sheet to tear, and further most of this adapted to engage with the teeth 3, said teeth type results in an objectionable bulge inthe being notched at 9 to receive the edge of the tympan 7 sheet which'further increases the tongue. The tongues 8 are also notched at liability to tear. 10 to receive the sides of the teeth 3. It will My object is to devise a construction which be noted that the outer edge of at least one will avoid the use of glue or other adhesive of the tongues 8 is curved for a purpose which and with which the likelihood of tearing the will hereinafter appear. The guide 6 is prefsheet is reduced. i erably provided with projections 21.0n its I attain my object by providing a base lower side adapted to engage in the holes 4 member which is inserted beneath the tympan in the base.

sheet and a guide member which is placed Slidablyhiounted on the guide plate 6 is above the tympan sheet to clamp the sheet bea stop member 11 which is carried by ascrew tween them, these members being provided l2 threaded through a hole in a lug 13 sewith co-acting teeth or engaging members cured to the upper side of the plate 6. which are adapted to pass through holes in The gauge-is placed in position as folthe sheet. The construction is hereinafter lows: The base member A'is placed beneath more fullydescribed and illustrated in the the tympan sheetwith its teeth 3 projcctaccompanying drawings in which ing through to the upper side thereof. The Fig. 1 is a perspective view of my imguide member B is then placed in position proved gauge attached to a tympan sh t; with the notches 10 in the sides of thetongues Fig. 2 a longitudinal section through the 8 in interlocking engagement with thenotches gauge, i and guldebelng 1n Separated in the sides of the teeth 3. The rear end relalflonshlll; r of the guide plate 6 is then forced downward R 3 a P VIEW 9 the gauge; h ly to cause, the projections 21 in its under side perspe.ctlve g to pierce the tympan sheet and enter the holes, giggi of separatmg the gmde mm t 8 4m the base. The stop 11, or guide member.

Fig. 5 a plan view of a modified form of ffp then be l l p .deslred" p 0 remove the gauge, 1t 1s simply neces- 4 1 f th d saryto lift the rear end of the plate 6 to disf f g g p an new 0 mm er m0 1 e engage the pro ections 10 from'theholes 4 Fig. 7 a section on the line 7-( in Fig. 6. a ty r Sheet, 13mg P P of In the drawings, like numerals of reference g g g notches i 1 as a pivot, r00]; the 0 indicate corresponding partsin the different pp Pl 6 relfltlve t0 the lower as lndl' figures.

gauge;

cated by, the arrow in Fig. 4, to'disengage the opposite pair, which thus allows complete separation of the parts.

In Fig. I show a modified form in which the guide plate is provided with a screw 14 5 having a vertical axis. Slidable on the plate 6 is a stop member 15 having a slot 16 formed therein through which the screw 14 projects. A clamping nut 17 is provided on the screw 14 for clamping the stop member in position as adjusted.

In Figs. '6 and 7 another modification is shown. In this construction the lugs 18 and 19 which support the adjusting screw are formed by bending up tongues from the fiat sheet of which the device is formed. Two additional tongues 20 are bent up at the forward end of the guide member which are notched to receive the edges of the stop or guide proper 11 and maintain the latter in position. These tongues 20 also co-aot with the teeth 3 to position the guide relative to the base.

From the above description it will be seen that I have devised a construction which will satisfactorily attain the object of my inventionas set-out in the preamble of this specification.

What I claim as my invention is:

1. In afeed gauge for printing presses, the 39 combination of a base member adapted to be positioned entirely below a tympan sheet and a guide member adapted to be positioned above the sheet, one of said members having sheetpiercing projections thereon adapted to be interengaged with the other member, to prevent separation of said members in a plane normal to the surface of the sheet.

2. In. a feed gauge for printing presses, thecombination of a base member adapted 9 to be positioned below a tympan sheet and a guide member adapted to be positioned above the. sheet, said base member having teeth thereon adapted to pierce the sheet, said guide member being adapted to be releasably engagedwith said teeth to clamp the sheet between the members.

3. In a feed gauge for printing presses,

the combination of a base member adapted to be positioned". below a tympan sheet and a P guide member adapted to be positioned above the sheet, said base member having teeth thereon adapted I to pierce the sheet, and

tongues on said guide member adapted to be releasably engaged with said teeth to clamp themembers together.

4. Ina feed gauge for printing presses, the

combination of a base member adapted to be positioned below a tympan sheet and a guide on member adapted to be positioned above the sheet, said base member having teeth thereon adjacent one end adapted to pierce the sheet and a hole adjacent its other end; and tongues on said guide member adapted to be releasably engaged withsaid teeth, and a projection on its lower side adapted to enter the hole in the base.

5. In a feed gauge for printing presses, the combination of a base member adapted to be positioned below a tympan sheet and a guide member adapted to be positioned above the sheet, one of said members having sheet piercing projections thereon adapted to be interengaged, with the other member; and an adjustable stop carried by said guide member.

6. In afeed gauge for printing presses, the combination of a base member adapted to be positioned below a tympan sheet and a guide member adapted to be positioned above the sheet, said base member having teeth thereon adapted to pierce the sheet, said guide member being. adapted to be releasably engaged withsaid teeth to clamp the sheet betweenthe members; and an adjustable stop carried. by said guide member.

7. In a feed gauge for printing presses, the combination of a base member adapted to be positioned below a tympan sheet and a guide member adapted to be positionedabove the sheet, said base member having teeth thereon adapted to pierce the sheet, said teeth each having a. notch formedin its side; and tongues on said guide members adaptedto be releasably engaged in said notches.

8. For use with a tympan sheet, a feed gauge comprising a base member adapted to be, located entirely below said sheet and having teeth on its upper surface adapted tobe projected through said sheet; and a guide member adapted'tobe positioned above the sheet engaged with said teeth, to prevent separation of said members in aplane normal to the surface ofthe sheet.

Signed at Toronto, Canada, this 15th day of May, 1930.

ALEXANDER R. G. HORNE. 

